Categories: cPanelPlesk

How to Configure alternative SMTP port in Qmail (Linux + Plesk)

, How to Configure alternative SMTP port in Qmail (Linux + Plesk), Hostripples Web Hosting, How to Configure alternative SMTP port in Qmail (Linux + Plesk), Hostripples Web Hosting

Most of the ISP blocks default SMTP port (25) to control mail flow hence it is always advisable to have additional SMTP port open on the server. Here are the steps to configure qmail to use alternate SMTP port 587 on Linux Plesk server.

1. Login to the shell with root user and go to “xinetd.d” directory

[root@server]# cd /etc/xinetd.d

2. [root@server]# cat smtp_psa

3. [root@server]# vi /etc/services

Add below lines in “/etc/services” file
smtp_psa_new 587/tcp mail
smtp_psa_new 587/udp mail

4. [root@server]# cp smtp_psa smtp_psa_new

5. Change the service line in the new file “smtp_psa_new” to be this:

service smtp_psa_new
{
socket_type = stream
protocol = tcp
wait = no
disable = no
user = root
instances = UNLIMITED
server = /var/qmail/bin/tcp-env
server_args = /usr/sbin/rblsmtpd -r bl.spamcop.net /var/qmail/bin/relaylock /var/qmail/bin/qmail-smtpd /var/qmail/bin/smtp_auth /var/qmail/bin/true /var/qmail/bin/cmd5checkpw /var/qmail/bin/true
}

6. [root@server]#/etc/init.d/xinetd restart

7. Make sure that additional port 587 is open in firewall and check whether port is now listening by following command:

[root@server]# netstat -anp | grep xinetd
It should display the output as given below
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 6989/xinetd
tcp 0 0 0.0.0.0:587 0.0.0.0:* LISTEN 6989/xinetd

That’s it !!! Enjoy


Vishwajit Kale
Vishwajit Kale blazed onto the digital marketing scene back in 2015 and is the digital marketing strategist of Hostripples, a company that aims to provide affordable web hosting solutions. Vishwajit is experienced in digital and content marketing along with SEO. He's fond of writing technology blogs, traveling and reading.

Recent Posts

The Ultimate Guide to DIY Website Builders for Entrepreneurs

Ah, the joys of building a website! Picture this: You're sitting there in your pajamas, coffee in hand, ready to…

7 days ago

Don’t Ignore These 11 Signs You Need a Hosting Upgrade

Are you feeling like your website is running in slow motion? It can be frustrating when your online presence doesn't…

2 weeks ago

PrestaShop vs OpenCart: Which Is Right for Your Business?

Are you ready to take your online store to the next level? Whether you're running a PrestaShop or OpenCart platform,…

3 weeks ago

Sitemaps: A Guide to Enhancing Online Visibility

Picture this: your website is like a fabulous party happening in the darkest corner of the internet, but nobody's showing…

4 weeks ago

Step-by-Step Guide to Implementing a CDN for WordPress

Picture this: Your WordPress site is like that one friend who's always fashionably late to everything. You know, the one…

1 month ago